(in the U.S. Postal Service) the class of mail consisting of merchandise weighing one pound or more, including parcel post and all first-, second-, or third-class matter weighing 8 ounces (227 grams) or more and not sealed against inspection.
Other definitions for fourth-class (2 of 2)
of, relating to, or designated as a class next below third, as for mailing, shipping, etc.
as fourth-class matter; by fourth-class mail: Send it fourth-class.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use fourth class in a sentence
Not having heard what station he had booked for, I took a fourth-class ticket to Wittmund, which covered all chances.The Riddle of the Sands | Erskine Childers
The same day we were marched in a body to the railway depot and herded into a fourth-class car.The Trail of '98 | Robert W. Service
It was a snowy day, the train was full, and he was obliged to climb into a fourth-class place, a seat on the top of the cars.
They've just divided us fourth-class men up among the rest to do chores for them.Captain Jinks, Hero | Ernest Crosby
I suppose you understand, Jinks, that none of us upper-class men can afford to be seen talking to you fourth-class beasts?Captain Jinks, Hero | Ernest Crosby
British Dictionary definitions for fourth-class
of or relating to mail that is carried at the lowest rate
by fourth-class mail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012